where \(R_{4}\) , \(R_{5}\)  are classical turning points. In this study, the experimental \(Q_{\alpha }\) -values are taken from refs. [1]}, [2]}. By assuming that the \(\alpha \)  particle vibrates in a harmonic oscillator potential with oscillation frequency \(\omega \) , the assault frequency \(\nu _{0}\)  can be determined as illustrated in ref.[3]}.
